There are three reasons why sago palms are yellowing: their location, needed soil amendments and improper watering.
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The Extension Botanic Gardens feature more than 1,500 species of plants, including many found nowhere else in the Las Vegas Valley.
Rock placed on top of the soil contributes to a soil problem, but wood chips won’t. Spraying the plants with iron fertilizer might be a temporary fix but not a long-term one.